Figure F3. Summary of pre-Leg 192 age data for Ontong Java Plateau basement basalt, later lava flows and intrusions on Malaita and San Cristobal, and ash or glass-shard-rich layers within the sedimentary section at Sites 288 and 289 (Tejada et al., in press, and references therein). Ages derived from biostratigraphy are shown with error bars; the others are 40Ar-39Ar plateau or, for the Malaitan alnöites, U-Pb zircon ages. Open squares = values reported by Parkinson et al. (1996).